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Product Detailed Parameters
- Description：IC RF TXRX+MCU BLE 68QFN
- Series：-
- Mfr：Silicon Labs
- Package：Tray
- Type：TxRx + MCU
- RF Family/Standard：Bluetooth, General ISM < 1GHz
- Protocol：Bluetooth v5.1
- Modulation：2-FSK, 4-FSK, 2-GFSK, 4-GFSK, DSSS
- Frequency：902MHz ~ 928MHz, 2.4GHz ~ 2.4835GHz
- Data Rate (Max)：2Mbps
- Power - Output：20dBm
- Sensitivity：-108.6dBm
- Memory Size：1MB Flash, 256kB RAM
- Serial Interfaces：GPIO, I2C, I2S, IrDA, JTAG, PWM, SPI, UART, USART
- Voltage - Supply：1.71V ~ 3.8V
- Current - Receiving：4.2mA ~ 10.2mA
- Current - Transmitting：12.3mA ~ 98mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：68-VFQFN Exposed Pad
- Supplier Device Package：68-QFN (8x8)
- GPIO：49
- Grade：-
- Qualification：-
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Overview
The EFR32SG28B320F1024IM68-A is a dual-band RF System-on-Chip designed for the Amazon Sidewalk ecosystem. It integrates a Sub-GHz radio and a 2.4 GHz Bluetooth Low Energy transceiver with an ARM Cortex-M33 core operating at 78 MHz. The device features 1024 kB of Flash memory, 256 kB of RAM, and supports up to +20 dBm output power. It includes Secure Vault High security and operates within a voltage range of 1.71 V to 3.8 V.
Feature Summary
- Dual-band operation supporting both Sub-GHz and 2.4 GHz Bluetooth Low Energy protocols
- Integrated ARM Cortex-M33 processor with hardware DSP and FPU capabilities
- Secure Vault High implementation for enhanced IoT device protection against remote and local attacks
Applications
- Amazon Sidewalk compatible devices
- Smart home sensors and actuators
- Security and access control systems
- Environmental monitoring stations
Procurement Notes
Verify the specific suffix 'A' against the official Silicon Labs datasheet to confirm package type and temperature grade. Ensure compatibility with the intended antenna design for both frequency bands. Confirm supply chain availability through authorized distributors as stock levels fluctuate.
Selection Notes
Select this component when dual-band connectivity is required for extended range and indoor coverage. The high flash capacity supports complex protocol stacks like Amazon Sidewalk. Consider the QFN-68 package constraints for PCB layout and thermal management during the design phase.
Part Context
This part belongs to the EFR32SG28 family, optimized for low-power wireless applications. It shares architectural similarities with other SG28 variants but differs in memory size and package configuration. It complements the FG28 series by offering specific optimizations for Sidewalk network integration.
Replacement Considerations
Check for EFR32SG28B320F1024IM68-AR if reel packaging is preferred over trays. Verify cross-compatibility with EFR32FG28 series if Sidewalk-specific features are not strictly required.
